We are seeking a highly capable Senior Mechanical Design Engineer (contract/temporary) to support ongoing product development and improvement efforts. This is a hands-on, execution-focused role centered on improving existing designs, building hardware, and driving real-world performance. The ideal candidate has 8+ years of experience, strong Onshape proficiency, and thrives in a fast-paced, highly collaborative onsite environment. ROLES AND RESPONSIBILITIES
Design and improve components and systems based on existing products (“like design”)
Develop and release mechanical designs using Onshape
Drive improvements in performance, manufacturability, and reliability
Support testing, root cause analysis, and design iteration
Prototype and evaluate alternative design approaches
Contribute to system integration (mechanisms, motion systems, assemblies)
Develop and refine assembly and test processes
Collaborate cross-functionally with engineering, manufacturing, and field teams
Build, assemble, and validate prototypes and hardware hands-on
8+ years of mechanical design experience
Strong proficiency with Onshape (required)
Experience across key domains: machined parts, sheet metal, plastics, mechanisms, power transmission, and thermal systems
Experience with testing, debugging, and iterative design
Strong understanding of DFM and practical manufacturing considerations
Hands-on capability, including building and validating designs independently
Experience with electromechanical systems and system integration
Ability to adapt and improve existing designs
Comfortable working onsite in a collaborative environment
Nice to have:
Experience with large weldments and structural design (FEA a plus)
Experience working around rotating machinery
Background in reliability, failure analysis, or assembly/test process development
Engagement Details
Type: Contract / Temporary
Location: Onsite (no remote)
Duration: 6 month +
Start: Immediate
Growth Opportunity: This role has the potential to convert to a full-time position based on performance and business needs
Impact of the Role This role is critical to driving near-term design execution, product improvements, and reliability gains. You will directly influence the performance and success of systems deployed in real-world environments. Additional Information Location: This role is based in Burlington, MA. We are seeking local candidates, as relocation assistance is not available. Work Authorization: Applicants must be authorized to work in the U.S. on a full-time basis. We are unable to provide visa sponsorship for this position currently Compensation details: 70-100 Hourly Wage